15723553128 has 32 divisors (see below), whose sum is σ = 39313908960. Its totient is φ = 5240514240.

The previous prime is 15723553127. The next prime is 15723553133. The reversal of 15723553128 is 82135532751.

It is a self number, because there is not a number n which added to its sum of digits gives 15723553128.

It is not an unprimeable number, because it can be changed into a prime (15723553127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172026 + ... + 247062.

It is an arithmetic number, because the mean of its divisors is an integer number (1228559655).

Almost surely, 2^15723553128 is an apocalyptic number.

It is an amenable number.

15723553128 is an abundant number, since it is smaller than the sum of its proper divisors (23590355832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15723553128 is a wasteful number, since it uses less digits than its factorization.

15723553128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83777 (or 83773 counting only the distinct ones).

The product of its digits is 252000, while the sum is 42.

The spelling of 15723553128 in words is "fifteen billion, seven hundred twenty-three million, five hundred fifty-three thousand, one hundred twenty-eight".